The Chronicles of Narnia: The Voyage of the Dawn Treader

Three Narnian years after the events of Prince Caspian, Lucy and Edmund Pevensie are staying with their irritating cousin Eustace Scrubb while their older siblings Peter and Susan are in America as World War II rages on. Edmund is too young to enlist in His Majesty's Armed Forces, to his chagrin. A painting of a ship on the ocean transports Lucy, Edmund, and Eustace into an ocean in Narnia.